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A. 2 Sheets.-Sheet 1. J. M. GHILDS & D. B. SMITH.

MECHANISM FOR HANGING AND GENTERING GRINDSTONES AND FRAMES THEREFOR.

No. 350,972. Patented Oct. 19, 1886.

N (ModeL) ETERS. Phaw-Lgmo m hen Wash ngton. D. c.

(ModeL) 2 Sheets-Sheet 2. J. M. GHILDS & D. B. SMITH. MECHANISM FOR HANGING AND GENTERING GRINDSTONES AND FRAMES THEREFOR.

No. 350,972. r Patented Oct. 19, 1886.

6 7w w j J. MORRIS CHILDS AND DEV/AXE B. SMITH, OF UTIOA, NE\V YORK, ASSIGN- ORS TO J. MORRIS CHILDS & (30., OF SAME PLACE.

MECHANISM FOR HANGING AND CENTERING GRINDSTONES AND FRAMES THEREFOR.

SPECIFICATION forming part of Letters Patent No. 350,952, dated October 19, 1886. Application filed May 91, 1585. Serial No. 166,235. (ModcL) To all whom it 77mg concern: served that the fixed shoulder on the shaft Beitknown that we, J. MORRIS OHILDs and may consist of a conical, square, or other DEWANE B. SMITH, of Utica, in the county of shape, (excepting round,) and other means of Oneida and State ofNewYork, havein'vented locking the shaft and disk may be used with- 5 certain new and useful Improvements in Mechout departing from the spirit of our invention, anism for Hanging and Centering Grindstones so long as the fixed shoulder is retained with and in Frames Therefor; and we do hereby desuitable means for engaging the disk which clare that the following is a full,clear, and exfits and is held thereon. act description oftheinvention, which will en- In the drawings the locking device consists 60 IO able others skilled in the art to which it apin grooves (1. which receive projections I) b pertains to make and use the same, reference in the central opening of the clamping-disk B, being had to the accompanying drawings, and which fit into the grooves when the disk is to the letters of reference marked thereon, placed on the shaft and driven against prowhich form part of this specification. jecting flanges m m, thereby forming, with the 65 i5 Our-invention relates to mechanism forhangnut hereinafter described, a compact locking ing and centering grindstones and in frames device for holding the stone and shaft. therefor; and it consists in the means herein- As before mentioned, other means of lockafter described, and pointed out in the claims. ing the disk and shaft may be employed, so Figure l reprcscntsa side view of the frame long as a fixed shoulder is retained on the 2c and stone mounted thereon. Fig. 2 is a top shaft, and one or more of the grooves and proview of one of the beams. Fig. 3 is an end jections may also be used. \Ve also preferaview of the truss-leg. Fig. l is a side view of bly provide a raised surface, a, on the shaft the trussleg. Fig. represents apartial secprovided with screw-threads. tion of the grindstonc, taken through the eye \VeprovidestoneO, provided with the usual 7 of the stone, and a side view of the clampingcentral eye, to which stone we apply on oppo; disks and. the shaft. Fig. (i is a side view of site sides, over the eye, clamping-disks B and one ofthe centeringand clampingdisks. Fig. ,3, which are held rigidly to the stone by re- 7 is a partial section of the same disk through taining bolts and nuts I) b when the disks are line a; m of Fig. (i. Fig. 8 is a cross section of properly centered ont-hestonc. Each of these so the shaft, its screw-thrczul, and tapering redisks is provided with a central opening for t aining-nut, through line .2 s, Fig. Fig. 9 receiving thcshaft, diskBbcing provided with represents a perspective view of a section of lugs I) I), projecting into the central opening, the shaft and the fixed shoulder with flanges for the purpose already described, while disk and grooves thereon. Fig. 10 is a section of B is provided with a central opening for re 8 33 a portion of one of the clampiugdisks. Fig. ceiving tapering nut a, which fits onto the 11 is a side view of a tapering rctainingnut. raised portion (1% of the shaft, and serves to Fig. 12 representsa vertical central section of center and clamp the stone with the disks our grindstonc, hanger, and frame. thereon between the nut and the fixed shoul- In the accompanying drawings, similar letder, whereby a rigid union is formed between 0 4c ters of reference refer to corresponding parts the shaft and stone.

throughout the several views. It is obvious that the disk B may be made XV e rotate the stones by means of a shaft, A, to fit the shaft with substantial accuracy, and mounted on a frame, the shaft being provided an ordinary nut be used for clamping the stone with handle or crank F. between it and the fixed shoulder, without de- 5 For locking the stone to the shaft on which parting from the spirit of our invention, a1- it is mounted to be rotated we provide fixed though we prefer the tapering nut as the most shoulder a, Fig. 9. This shoulder is provided reliable means for accomplishing this end. with projecting flanges mm, Fig. 9, and groove a a are flanges on the shaft, working on a, Fig. 9, for centering and locking one of the rollers or other supports, for preventing the I00 clampingdisks to the shaft, as hereinafter end-thrust of the shaft.

more fully explained. It will here be 01)- 0, represents the ordinary crank for attaching a treadle, and a represent the bearings for receiving the crank or handle F.

I) b" represent boltholes in the clamping disk. We provide a truss frame for mounting this stone, having two horizontal beams, D D, supported at each end on truss-legs D D, which are formed, preferably, of iron, each pair of legs consisting of two pieces, (indicated in Fig. 3,) forming braces. Each set of legs are riveted at d, and are formed of two strips of iron, (1 and (1 These logs are braced to the beams by braces d d, one end attached to the beam at d d, and the opposite ends to the legs at (1 d as shownin Fig.l,thereby forming a reliable and compact frame easily packed for shipping. \Ve also provide an ordinary treadle, E, one end pivoted to the leg at e, and the center of said treadle connected by hook e to connectin -rod e which is attached to crank a, forming a device in general use.

f f represent strengthening lugs on the clamping-disk. These may be omitted at the option of the manufacturer.

What we claim as new, and desire to secure by Letters Patent, is r l. The combination of two disks, each disk having a central perforation, the retaining bolts for engaging and clamping the disk over the eye of the stone, the shaft with a fixed shoulder and a screw-threaded section, the locking device for engaging one of the disks and rigidly holding the shaft and stone, and the nut for retaining the stone and disk in contact with the fixed shoulder, substantially as described.

2. The combination,with thegrindstone and shaft,of the fixed shoulder provided with projecting flange and grooves, 21 centering and clamping disk with central opening with lugs projecting into said opening, corresponding in number and size to the grooves in the shoulder, a second clamping-disk with central aperture, the two disks held in the eye of the stone by bolts and nuts, and the tapering nut for fitting the central opening in one of the disks and working on the screw-threaded section on the shaft, substantially as described.

3. The combination, with the grindstone having a central eye, of two clamping-disks with central openings rigidly held on opposite sides of the stone over the eye by bolts and nuts, a locking device consisting of a fixed shoulder on the shaft with grooves and tongues for locking the shaft and disk, the tapering nut, and a screw-threaded section on the shaft,

substantially as described, for the purposes stated.

4. The combination of a fixed shoulder on the shaft, two perforated clamping-disks centered and bolted over the eye of the stone, a locking device consisting of afixed shoulder with grooves for receiving lugs in the opening of, one of the disks, a tapering nut for fitting one of the disks, and a screw-threaded section on the shaft for receiving the nut and hold ing the stone and disk in contact with the fixed shoulder.

5. The combination, in the frame, of two parallelbeams supported at each end on trusslegs, each set of legs formed of two bands of iron bent and riveted together,with braces attached to each set and to the parallel beams, substantially as described.

6. The combination of the perforated disk, the bolts and nuts for holding said disk to the stone, the fixed shoulder on the shaft, and means for locking the disk and shaft and holding the same in contact with the fixed shoulder.

In witness whereof we have aifixed our signatures in presence of two witnesses.

J. MORRIS OHILDS. DEW'AN'E B. SMITH. Witnesses:

EDWIN H. RIsLEY, Cells. A. Lone. 

